CN109916750A - Coal and gas prominent simulation test test piece box - Google Patents
Coal and gas prominent simulation test test piece box Download PDFInfo
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- CN109916750A CN109916750A CN201910281854.4A CN201910281854A CN109916750A CN 109916750 A CN109916750 A CN 109916750A CN 201910281854 A CN201910281854 A CN 201910281854A CN 109916750 A CN109916750 A CN 109916750A
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Abstract
The invention discloses a kind of coal and gas prominent simulation test test piece boxes, cabinet is equipped with the horizontal piston pressure head for passing perpendicularly through wall box, case lid is equipped with the vertical piston ram for passing perpendicularly through case lid, horizontal piston pressure head, vertical piston ram inner end be mounted on pressing plate, horizontal piston pressure head, vertical piston ram can transmit three kinds of static load, dynamic load, coupled static-dynamic loadingi loading forms；Gas filling pipeline built in below the bottom of box, and the homogenous charge into cabinet of the foam metal layer by being laid on the bottom of box, aspis and sensor wire hole are also provided on the side wall of cabinet, pressure relief device is installed outside aspis, sensor crossover sub is installed, pressure relief device, sensor crossover sub and horizontal piston pressure head are located on the different lateral of cabinet in sensor wire hole.It is able to achieve the load of a variety of stress waves of coal and rock, can uniformly and stably be inflated into cabinet, thus more truly simulating two-dimensional coupled static-dynamic loadingi induction coal and gas prominent test.
Description
Technical field
The analog simulation experimental rig more particularly to coal and gas that the present invention relates to a kind of for simulating coal and gas prominent
Prominent simulation test test piece box.
Background technique
Layer during similar model test refers to full-scale test, by scale smaller or waiting than being tested accordingly on model,
It obtains related data and checks design defect.Using test structure similar with prototype made of proper proportion and analog material
Apply ratio load on (or component), makes the structural test for drilling prototype structure real work after model stress again.Subjects are
Copy prototype (practical structures) and according to a certain percentage ruler duplication made of test represent object, it have practical structures whole or
Partial Feature.Experimental study is carried out with model similar with prototype, and the examination that one kind that result of study is applied to prototype is important
Research method is tested, each ambit is widely used in.It is principal advantage is that can control main experimental parameter without by environment
The limitation and influence of condition；Test is compared convenient for changing test parameters；Good economy performance.
With the continuous improvement of pit mining depth and intensity, mine motive force disaster thing relevant to coal and rock unstable failure
Therefore be on the rise, frequency, intensity and the extent of the destruction that bump and coal and gas prominent occur with adopt deep increase, watt
The raising of this pressure has apparent ascendant trend, and quite a few deep-well disaster shows bump, coal and gas and dashes forward
The phenomenon that two kinds of dynamic disasters are existed simultaneously, are intercoupled out, i.e. deep-well composite power disaster.Therefore, complex stress is acted on
Under the prominent genesis mechanism research of coal containing methane gas it is just necessary.
Existing coal and gas prominent simulation experiment method and its corollary apparatus, dynamic load applying mode are to drop hammer and Hope
The gloomy bar two types of gold, impact loading has preferable simulation effect, but cannot achieve adding for a variety of stress waves of coal and rock
It carries, it is difficult to meet a variety of dynamic load conditions and induce the relevant research of coal and gas prominent.
Summary of the invention
The present invention is intended to provide a kind of moulded dimension is larger, coal and gas can be induced prominent with simulating two-dimensional coupled static-dynamic loadingi
Test test piece box out, can coal and rock mechanical characteristic under more preferable simulation complex stress condition.
For this purpose, the technical scheme adopted by the invention is as follows: a kind of coal and gas prominent simulation test test piece box, including cabinet
And case lid, the cabinet is equipped with the horizontal piston pressure head for passing perpendicularly through the one of side wall of cabinet, and case lid is equipped with vertically wearing
Cross the vertical piston ram of case lid, horizontal piston pressure head, vertical piston ram inner end be mounted on pressing plate, horizontal piston pressure
Head, vertical piston ram can transmit three kinds of static load, dynamic load, coupled static-dynamic loadingi loading forms；Built in below the bottom of box
Gas filling pipeline, and the homogenous charge into cabinet of the foam metal layer by being laid on the bottom of box, the side wall of the cabinet
On be also provided with aspis and sensor wire hole, pressure relief device is installed, in the sensor wire hole outside the aspis
Sensor crossover sub is installed, and pressure relief device, sensor crossover sub are located at the not ipsilateral of cabinet with horizontal piston pressure head
On wall.
The horizontal piston pressure head totally one as a preferred embodiment of the above solution, is arranged on the left side wall of cabinet；It is described perpendicular
Straight piston ram totally three, and the pressing plate or so of three vertical piston rams is successively installed and is in close contact；The case is intracorporal
The upper left corner is provided with reserved space, and when cabinet is provided with test specimen, cushion block, the level are equipped at the upper left position of test specimen
The left end of the upper end of the pressing plate of piston ram, the pressing plate of the vertical piston ram of the leftmost side is pressed on cushion block jointly, prevents pressing plate
The clast on test specimen is pressed into reserved space when movement.Pressing plate of three vertical piston rams or so is successively installed and is closely connect
Touching guarantees that vertical direction pressurization is uniform；Reserved space is added, move each pressing plate can smoothly；Cushion block is added simultaneously, prevents from trying
In clast indentation reserved space on part.
Further, the side wall of the cabinet, be respectively arranged with hanging ring at the top of case lid, be also provided with gas vent on case lid,
And entrance, the gas vent of gas filling pipeline are sealed by plug respectively.By hanging ring hoisting box body and case lid, it is exclusively used in model
Larger-size test piece box.
Further, the gas filling pipeline is by being provided with the intracorporal L shape hole of case and being mounted under foam metal layer
The criss-cross grid network management composition that Fang Bingyu L shape hole communicates, and notch is provided at the top of grid network management.Using completely new
Gas filling pipeline structure, it is by the notched criss-cross grid network management in top, the gas being filled with by L shape hole is equal
It after even dispersion, sends out through notch, then is sent into cabinet through foam metal layer, further ensured uniformly steady to the intracorporal test specimen of case
Fixed inflation.
Beneficial effects of the present invention: two kinds of dynamic load applying modes of drop hammer and Hopkinson bar of abandoning tradition, using work
The load applying mode of pressure head and pressing plate is filled in, carries out the load of horizontal load and vertical load, and each pressure head both can be independent
It is further applied load, can also synchronize and be further applied load, be able to achieve the load of a variety of stress waves of coal and rock；In conjunction with the built-in gas of the bottom of box
Body filling piping and foam metal layer can be inflated uniformly and stably into cabinet, thus more truly simulating two-dimensional sound group
Close load induction coal and gas prominent test.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the schematic partial sectional view of grid network management.
Fig. 5 is the structural schematic diagram of sensor crossover sub.
Fig. 6 is the structural schematic diagram of pressure relief device.
Fig. 7 is the structural schematic diagram of the pressure-bearing clamper of pressure relief device.
Specific embodiment
By way of example and in conjunction with the accompanying drawings, the invention will be further described:
In conjunction with shown in Fig. 1-Fig. 6, a kind of coal and gas prominent simulation test test piece box, mainly by cabinet 1, case lid 2, water
Flat piston ram 3, vertical piston ram 4, pressing plate 5, foam metal layer 6, gas filling pipeline 7, pressure relief device 8, sensor turn
Changing-over head 9, cushion block 10, hanging ring 11 form.
Cabinet 1 and case lid 2 are bolted, and interface has sealing ring.The seal cavity that cabinet 1 and case lid 2 surround is used
In the test specimen for being laid with coal and gas prominent simulation test, such as coal dust or analog material.
Cabinet 1 is matched equipped with the horizontal piston pressure head 3 for passing perpendicularly through 1 one of side wall (such as left side wall) of cabinet, case lid 2
Have the vertical piston ram 4 for passing perpendicularly through case lid 2.Horizontal piston pressure head 3, vertical piston ram 4 inner end be mounted on
Pressing plate 5.Horizontal piston pressure head 3, vertical piston ram 4 can transmit three kinds of static load, dynamic load, coupled static-dynamic loadingi loading forms.
Preferably, the long 100cm of test piece box × wide 40cm × high 40cm, is arranged in cabinet 1 totally by horizontal piston pressure head 3 one
Left side wall on；Vertical piston ram 4 totally three, and the pressing plate 5 or so of three vertical piston rams 4 is successively installed and is closely connect
Touching.For same test piece box, horizontal piston pressure head 3 is preferably consistent with the size of vertical piston ram 4, is convenient for type selecting.When
One timing of size of test piece box, after the selection of dimension of piston ram determines, the pressure head quantity in both direction is determined that；But
Pressure head quantity can be separately selected according to the size of required pressure.
The upper left corner in cabinet 1 is provided with reserved space 1c, to ensure that all pressing plates 5 are smoothly mobile.When cabinet 1 is provided with
When test specimen, be equipped with cushion block 10 at the upper left position of test specimen, the upper end of the pressing plate 5 of horizontal piston pressure head 3, the leftmost side it is vertical
The left end of the pressing plate 5 of piston ram 4 is pressed in jointly on cushion block 10, prevents pressing plate 5 to be pressed into the clast on test specimen when moving reserved
Space 1c.
Gas filling pipeline 7 built in 1 bottom part down of cabinet, and the foam metal layer 6 by being laid on 1 bottom of cabinet is to case
Homogenous charge in body 1.Preferably, gas filling pipeline 7 by the L shape hole 7a that is provided in cabinet 1 and is mounted on foam metal
6 lower section of layer and the criss-cross grid network management 7b composition communicated with L shape hole 7a, and notch is provided at the top of grid network management 7b
7c (as shown in Figure 4).
It is also provided with aspis 1a and sensor wire hole 1b on the side wall of cabinet 1, pressure release dress is installed outside aspis 1a
8 are set, sensor crossover sub 9 is installed, and pressure relief device 8, sensor crossover sub 9 and level are living in the 1b of sensor wire hole
Plug pressure head 3 is located on the different lateral of cabinet 1.
The side wall of cabinet 1, the top of case lid 2 are respectively arranged with hanging ring 11, and gas vent 2a, and gas are also provided on case lid 2
Entrance, the gas vent 2a of body filling piping 7 are sealed by plug respectively.After the completion of test, ability after gas vent 2a exhaust is opened
It can be carried out disassembly, to ensure the safety operated.
To obtain the related data during the coal and gas prominent under a variety of stress conditions, also need to be embedded with inside test specimen
The quantitative testing devices such as strain gauge, temperature sensor pass through the sensor wire hole 1b and test piece box on the side wall of cabinet 1
Outer data signal reception device connection.Constant, the sensor wire for the test piece box internal gas pressure during guarantee test
1b best sensor crossover sub 9 in hole is blocked, and while blocking guarantee gas pressure, is drawn pickup wire, will be sensed
Device is connect with corresponding data signal receiving device.As shown in figure 5, sensor crossover sub 9 is by "T"-shaped rotary table main body 9-1, gasket
9-2, sealing ring 9-3, conducting wire 9-4 and insulator pin pipe 9-5 are formed.
The " T " shaped sensor wire hole 1b opened up on "T"-shaped rotary table main body 9-1 and test piece box side wall is matched, "T"-shaped circle
Platform main body 9-1 can be inserted into from inside to outside in " T " shaped sensor wire hole 1b."T"-shaped rotary table main body 9-1 includes small rotary table and big
Rotary table is set with gasket 9-2 and sealing ring 9-3 on small rotary table.After installation, gasket 9-2 and sealing ring 9-3 are by "T"-shaped rotary table master
The step surface of body 9-1 is pressed in "T"-shaped sensor wire hole 1b.
The pore of at least two perforations is offered in the middle part of "T"-shaped rotary table main body 9-1.Pore is preferably four, but unlimited
It in four, is set as needed, all pore rings are circumferentially uniformly distributed around the center of "T"-shaped rotary table main body 9-1.
Eradication edge a fairlead 9-5, insulator pin pipe 9-5 and pore is fitted in each pore to fix using viscose glue and absolutely
The both ends of edge fairlead 9-5 each extend to outside pore.A conducting wire 9-4, conducting wire 9-4 are fitted in every eradication edge fairlead 9-5
It is fixed with insulator pin pipe 9-5 using viscose glue and the both ends of conducting wire 9-4 each extends to outside insulator pin pipe 9-5.Conducting wire 9-4 is best
Using copper wire.
For being connected with the connecting line of the sensor in test piece box, the outboard end of conducting wire 9-4 is used for for the inner end of conducting wire 9-4
It is connected with the connecting line of the data signal reception device outside test piece box.Preferably, the biography in the inner end and test piece box of conducting wire 9-4
The connecting line of sensor is used and is weldingly connected.
By "T"-shaped rotary table main body, gasket, sealing ring jointly carry out the sensor wire hole in test piece box effectively close
Envelope guarantees the air-tightness of test piece box entirety, easy for installation, stable connection；Since the sensor wire hole of test piece box is also step
Shape, during the experiment, when test piece box internal pressure is greater than ambient pressure, internal pressure applies one to sensor crossover sub
A outside active force, sealing ring incite somebody to action further closely knit test specimen cabinet, the sensor wire hole of "T"-shaped rotary table main body and test piece box
Binding face increase, promote whole bearing capacity, leakproofness enhancing promotes the pressure maintaining performance of test piece box.
In conjunction with shown in Fig. 6, Fig. 7, pressure relief device 8 is by left support abutment 8-1, right support abutment 8-2, pressure-bearing clamper 8-3, bolt and nut
Component 8-4, sealing ring 8-5, the first rupture disk 8-6, the second rupture disk 8-7, pressure sensor 8-8 composition.Pressure-bearing clamper 8-3
Test specimen is mounted between left support abutment 8-1 and right support abutment 8-2, and through circumferentially uniformly distributed bolt and nut component 8-4 locking
Outside the aspis 1a of case.Pressure-bearing clamper 8-3 use left, center, right three-stage package assembly, left support abutment 8-1, right support abutment 8-2 and
Every section of middle part of pressure-bearing clamper 8-3 is provided with the air-flow via hole of face aspis 1a.Left section and the middle section of pressure-bearing clamper 8-3
Between clamping the first rupture disk 8-6 is installed, between the middle section of pressure-bearing clamper 8-3 and right section clamping the second rupture disk is installed
A pressure sensor 8-8, pressure-bearing clamper 8- are separately installed on the inside of 8-7, the first rupture disk 8-6, the second rupture disk 8-7
Aeration aperture 8-3a is provided on 3 middle section side wall, the air-flow in test piece box can enter left support abutment 8-1, pressure-bearing clamping through aspis 1a
Left section of device 8-3, the confined space that surrounds of the first rupture disk 8-6, the gas of aeration aperture 8-3a can enter pressure-bearing clamper 8-3's
Middle section, right section of pressure-bearing clamper 8-3, the confined space that surrounds of the first rupture disk 8-6, the second rupture disk 8-7.
Pressure-bearing clamper 8-3 further includes at least two pieces of fixinig plate 8-3b, and the left and right ends of every piece of fixinig plate 8-3b lead to respectively
It crosses lock-screw 8-3c to be fixed on left section of pressure-bearing clamper 8-3 and right section of outer wall, quick group for realizing three sections of left, center, right
Dress.Sealing ring 8-5 is installed between left support abutment 8-1 and left section of pressure-bearing clamper 8-3.
Pressure relief device is controllable quick pressure relief device, and during test, booster pump is by filling while test piece box pressurization
Stomata pressurizes into pressure-bearing clamper, and pressure keeps below test piece box pressure, and is lower than the burst pressure of the first, second rupture disk
Power, connect with test piece box pressure suffered by first rupture disk of one end some by pressure balance in pressure-bearing clamper, first
Rupture disk will not destroy；With the second rupture disk of air contact jaw because pressure will not explosion lower than burst pressure；Pressure-bearing clamping
Pressure in device is carried out precise measurement by pressure sensor and is shown；It is quasi- when pressure sensor monitoring to pressure reaches predetermined value
When standby progress coal and gas prominent test, aeration aperture is continued through by booster pump and is pressurizeed to pressure-bearing clamper, until being connect with air
The second rupture disk explosion first of contravention, then due to pressure imbalance in air pressure and pressure-bearing clamper in test piece box, cause coal with
Gas Outburst simulation process.
Its working principle is that: when the pressure in pressure-bearing clamper is greater than burst pressure, the of one end is connect with test piece box
Burst pressure is also not achieved in pressure suffered by one rupture disk, and the first rupture disk will not destroy；With the second explosion of air contact jaw
Piece destroys first, the pressure instantaneous relase in pressure-bearing clamper, and test piece box connects first rupture disk of one end without flat at this time
Weigh pressure, and pressure is far longer than burst pressure, the first rupture disk instant blasting, to realize the artificial of blasting time in test piece box
Control.
The pressure relief device is able to achieve the fast automatic pressure release of aspis, and it is opened slowly to prominent energy to avoid aspis
It influences, simulates realistically coal and gas prominent process；Blasting time artificially controls, can be into not by pressure influence in test piece box
Prominent test under row different pressures can control prominent pressure.
Claims (5)
1. a kind of coal and gas prominent simulation test test piece box, including cabinet (1) and case lid (2), it is characterised in that: the cabinet
(1) equipped with the horizontal piston pressure head (3) for passing perpendicularly through cabinet (1) one of side wall, case lid (2) is equipped with passing perpendicularly through case
Cover (2) vertical piston ram (4), horizontal piston pressure head (3), vertical piston ram (4) inner end be mounted on pressing plate
(5), horizontal piston pressure head (3), vertical piston ram (4) can transmit three kinds of static load, dynamic load, coupled static-dynamic loadingi loading forms；
Gas filling pipeline (7) built in cabinet (1) bottom part down, and the foam metal layer (6) by being laid on cabinet (1) bottom
To cabinet (1) interior homogenous charge, it is also provided with aspis (1a) and sensor wire hole (1b) on the side wall of the cabinet (1),
It is equipped with pressure relief device (8) outside the aspis (1a), sensor crossover sub is installed in the sensor wire hole (1b)
(9), and pressure relief device (8), sensor crossover sub (9) are located on the different lateral of cabinet (1) with horizontal piston pressure head (3).
2. coal and gas prominent simulation test test piece box described in accordance with the claim 1, it is characterised in that: the horizontal piston pressure
Head (3) totally one is arranged on the left side wall of cabinet (1)；The vertical piston ram (4) totally three, and three vertical pistons
It successively installs and is in close contact in pressing plate (5) left and right of pressure head (4)；The upper left corner in the cabinet (1) is provided with reserved space
(1c) is equipped with cushion block (10), the horizontal piston pressure head when cabinet (1) is provided with test specimen at the upper left position of test specimen
(3) left end of the upper end of pressing plate (5), the pressing plate (5) of the vertical piston ram (4) of the leftmost side is pressed in jointly on cushion block (10),
Prevent pressing plate (5) that the clast on test specimen is pressed into reserved space (1c) when moving.
3. coal and gas prominent simulation test test piece box described in accordance with the claim 1, it is characterised in that: the cabinet (1)
It is respectively arranged with hanging ring (11), is also provided on case lid (2) gas vent (2a), and gas filling pipe at the top of side wall, case lid (2)
Entrance, the gas vent (2a) on road (7) are sealed by plug respectively.
4. coal and gas prominent simulation test test piece box described in accordance with the claim 1, it is characterised in that: the gas filling pipe
Road (7) by the L shape hole (7a) that is provided in cabinet (1) and be mounted below foam metal layer (6) and with L shape hole (7a) phase
Logical criss-cross grid network management (7b) composition, and notch (7c) is provided at the top of grid network management (7b).
5. coal and gas prominent simulation test test piece box described in accordance with the claim 1, it is characterised in that: the test piece box is long
100cm × wide 40cm × high 40cm, cabinet (1) and case lid (2) are bolted, and interface has sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910281854.4A CN109916750A (en) | 2019-04-09 | 2019-04-09 | Coal and gas prominent simulation test test piece box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910281854.4A CN109916750A (en) | 2019-04-09 | 2019-04-09 | Coal and gas prominent simulation test test piece box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109916750A true CN109916750A (en) | 2019-06-21 |
Family
ID=66969162
Family Applications (1)
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|---|---|---|---|
| CN201910281854.4A Pending CN109916750A (en) | 2019-04-09 | 2019-04-09 | Coal and gas prominent simulation test test piece box |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110308261A (en) * | 2019-07-02 | 2019-10-08 | 中国矿业大学 | A kind of heating of coal seam and note CO2Cooperative reinforcing gas drainage simulation experiment method |
| CN110988298A (en) * | 2019-12-25 | 2020-04-10 | 重庆大学 | Visual outburst test device for round coal sample |
| CN111175123A (en) * | 2020-02-18 | 2020-05-19 | 中国矿业大学(北京) | Sealing device and method for step pressure-maintaining gas-containing coal confining pressure SHPB experiment |
| CN112053618A (en) * | 2020-08-17 | 2020-12-08 | 中煤科工集团重庆研究院有限公司 | Coal and gas outburst disaster simulation box |
| CN112326919A (en) * | 2020-09-18 | 2021-02-05 | 安徽理工大学 | Coal and gas outburst simulation test device and test method |
| CN113218610A (en) * | 2021-04-08 | 2021-08-06 | 哈尔滨工程大学 | Strong-impact large-pulse-width impact load simulation device and control method thereof |
| CN116008083A (en) * | 2022-12-23 | 2023-04-25 | 平顶山天安煤业股份有限公司 | Large-scale automatic true triaxial coal rock mass test piece simulation test system |
| CN116025346A (en) * | 2022-12-23 | 2023-04-28 | 重庆大学 | Test piece box module for large-scale thickened oil exploitation test |
| CN116183864A (en) * | 2022-12-23 | 2023-05-30 | 重庆大学 | Axial end face coal and gas outburst simulation test system under multi-field coupling condition |
| CN116298175A (en) * | 2022-12-23 | 2023-06-23 | 重庆大学 | Gas outburst simulation test system capable of monitoring stress, temperature and gas pressure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110308261A (en) * | 2019-07-02 | 2019-10-08 | 中国矿业大学 | A kind of heating of coal seam and note CO2Cooperative reinforcing gas drainage simulation experiment method |
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| CN110988298A (en) * | 2019-12-25 | 2020-04-10 | 重庆大学 | Visual outburst test device for round coal sample |
| CN111175123A (en) * | 2020-02-18 | 2020-05-19 | 中国矿业大学(北京) | Sealing device and method for step pressure-maintaining gas-containing coal confining pressure SHPB experiment |
| CN112053618A (en) * | 2020-08-17 | 2020-12-08 | 中煤科工集团重庆研究院有限公司 | Coal and gas outburst disaster simulation box |
| CN112326919A (en) * | 2020-09-18 | 2021-02-05 | 安徽理工大学 | Coal and gas outburst simulation test device and test method |
| CN113218610A (en) * | 2021-04-08 | 2021-08-06 | 哈尔滨工程大学 | Strong-impact large-pulse-width impact load simulation device and control method thereof |
| CN116008083A (en) * | 2022-12-23 | 2023-04-25 | 平顶山天安煤业股份有限公司 | Large-scale automatic true triaxial coal rock mass test piece simulation test system |
| CN116025346A (en) * | 2022-12-23 | 2023-04-28 | 重庆大学 | Test piece box module for large-scale thickened oil exploitation test |
| CN116183864A (en) * | 2022-12-23 | 2023-05-30 | 重庆大学 | Axial end face coal and gas outburst simulation test system under multi-field coupling condition |
| CN116298175A (en) * | 2022-12-23 | 2023-06-23 | 重庆大学 | Gas outburst simulation test system capable of monitoring stress, temperature and gas pressure |
| CN116183864B (en) * | 2022-12-23 | 2023-08-22 | 重庆大学 | Axial end face coal and gas outburst simulation test system under multi-field coupling condition |
| CN116008083B (en) * | 2022-12-23 | 2023-10-03 | 平顶山天安煤业股份有限公司 | Large-scale automatic true triaxial coal rock mass test piece simulation test system |
| CN116298175B (en) * | 2022-12-23 | 2023-10-13 | 重庆大学 | Gas outburst simulation test system capable of monitoring stress, temperature and gas pressure |
| CN116025346B (en) * | 2022-12-23 | 2024-05-07 | 重庆大学 | Test piece box module for large-scale thickened oil exploitation test |
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